| /* Definitions of target machine for GNU compiler, for DEC Alpha on OSF/1. |
| Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. |
| Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) |
| |
| This file is part of GNU CC. |
| |
| GNU CC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU CC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* As of OSF 4.0, as can subtract adjacent labels. */ |
| |
| #undef TARGET_AS_CAN_SUBTRACT_LABELS |
| #define TARGET_AS_CAN_SUBTRACT_LABELS 1 |
| |
| /* Names to predefine in the preprocessor for this target machine. */ |
| |
| #define CPP_PREDEFINES "\ |
| -Dunix -D__osf__ -D_LONGLONG -DSYSTYPE_BSD \ |
| -D_SYSTYPE_BSD -Asystem(unix) -Asystem(xpg4)" |
| |
| /* Under OSF4, -p and -pg require -lprof1, and -lprof1 requires -lpdf. */ |
| |
| #define LIB_SPEC "%{p:-lprof1 -lpdf} %{pg:-lprof1 -lpdf} %{a:-lprof2} -lc" |
| |
| /* Pass "-G 8" to ld because Alpha's CC does. Pass -O3 if we are |
| optimizing, -O1 if we are not. Pass -shared, -non_shared or |
| -call_shared as appropriate. Also pass -pg. */ |
| #define LINK_SPEC \ |
| "-G 8 %{O*:-O3} %{!O*:-O1} %{static:-non_shared} \ |
| %{!static:%{shared:-shared} %{!shared:-call_shared}} %{pg} %{taso} \ |
| %{rpath*}" |
| |
| #define STARTFILE_SPEC \ |
| "%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}" |
| |
| #define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/" |
| |
| #define ASM_FILE_START(FILE) \ |
| { \ |
| alpha_write_verstamp (FILE); \ |
| fprintf (FILE, "\t.set noreorder\n"); \ |
| fprintf (FILE, "\t.set volatile\n"); \ |
| fprintf (FILE, "\t.set noat\n"); \ |
| if (TARGET_SUPPORT_ARCH) \ |
| fprintf (FILE, "\t.arch %s\n", \ |
| alpha_cpu == PROCESSOR_EV6 ? "ev6" \ |
| : (alpha_cpu == PROCESSOR_EV5 \ |
| ? (TARGET_MAX ? "pca56" : TARGET_BWX ? "ev56" : "ev5") \ |
| : "ev4")); \ |
| \ |
| ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename); \ |
| } |
| |
| /* No point in running CPP on our assembler output. */ |
| #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0 |
| /* Don't pass -g to GNU as, because some versions don't accept this option. */ |
| #define ASM_SPEC "%{malpha-as:-g} -nocpp %{pg}" |
| #else |
| /* In OSF/1 v3.2c, the assembler by default does not output file names which |
| causes mips-tfile to fail. Passing -g to the assembler fixes this problem. |
| ??? Strictly speaking, we need -g only if the user specifies -g. Passing |
| it always means that we get slightly larger than necessary object files |
| if the user does not specify -g. If we don't pass -g, then mips-tfile |
| will need to be fixed to work in this case. Pass -O0 since some |
| optimization are broken and don't help us anyway. */ |
| #define ASM_SPEC "%{!mgas:-g} -nocpp %{pg} -O0" |
| #endif |
| |
| /* Specify to run a post-processor, mips-tfile after the assembler |
| has run to stuff the ecoff debug information into the object file. |
| This is needed because the Alpha assembler provides no way |
| of specifying such information in the assembly file. */ |
| |
| #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0 |
| |
| #define ASM_FINAL_SPEC "\ |
| %{malpha-as: %{!mno-mips-tfile: \ |
| \n mips-tfile %{v*: -v} \ |
| %{K: -I %b.o~} \ |
| %{!K: %{save-temps: -I %b.o~}} \ |
| %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ |
| %{.s:%i} %{!.s:%g.s}}}" |
| |
| #else |
| #define ASM_FINAL_SPEC "\ |
| %{!mgas: %{!mno-mips-tfile: \ |
| \n mips-tfile %{v*: -v} \ |
| %{K: -I %b.o~} \ |
| %{!K: %{save-temps: -I %b.o~}} \ |
| %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ |
| %{.s:%i} %{!.s:%g.s}}}" |
| |
| #endif |
| |
| /* Indicate that we have a stamp.h to use. */ |
| #ifndef CROSS_COMPILE |
| #define HAVE_STAMP_H 1 |
| #endif |
| |
| /* Attempt to turn on access permissions for the stack. */ |
| |
| #define TRANSFER_FROM_TRAMPOLINE \ |
| void \ |
| __enable_execute_stack (addr) \ |
| void *addr; \ |
| { \ |
| long size = getpagesize (); \ |
| long mask = ~(size-1); \ |
| char *page = (char *) (((long) addr) & mask); \ |
| char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \ |
| \ |
| /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \ |
| if (mprotect (page, end - page, 7) < 0) \ |
| perror ("mprotect of trampoline code"); \ |
| } |